Graymills DDP .375' Pump OMI - Manual (Page 11)

11
Operation
Pressure Relief Procedure
PRESSURIZED EQUIPMENT HAZARD
The system pressure must be manually relieved to pre-
vent the system from starting or spraying accidentally.
To reduce the risk of an injury from accidental spray
from the gun, splashing fluid, or moving parts, follow
the Pressure Relief Procedure whenever you
D Are instructed to relieve the pressure
D Stop spraying
D Check or service any of the system equipment
D Install or clean the spray tips
WARNING
1. Shut off the air to the pump.
2. Open the dispensing valve, if used.
3. Open the fluid drain valve to relieve all fluid pressure,
having a container ready to catch the drainage.
Flush the Pump Before First Use
The pump was tested in water. If the water could contami-
nate the fluid you are pumping, flush the pump thoroughly
with a compatible solvent. Follow the steps under Starting
and Adjusting the Pump.
Starting and Adjusting the Pump
TOXIC FLUID HAZARD
Hazardous fluid or toxic fumes can cause
serious injury or death if splashed in the
eyes or on the skin, inhaled, or swallowed.
Do not lift a pump under pressure. If dropped, the fluid
section may rupture. Always follow the Pressure Relief
Procedure above before lifting the pump.
WARNING
1. Be sure the pump is properly grounded. Read FIRE
OR EXPLOSION HAZARD on page 3.
2. Check all fittings to be sure they are tight. Be sure to
use a compatible liquid thread sealant or Teflon
r tape
on all male threads. Tighten the fluid inlet and outlet
fittings snugly. Do not overtighten the fittings into the
pump.
3. Place the suction tube (if used) in the fluid to be
pumped.
4. Place the end of the fluid hose (N) into an appropriate
container. Close the fluid drain valve (J).
5. With the pump air regulator (H) closed, open all
bleed-type master air valves (B, E).
6. If the fluid hose has a dispensing device, hold it open
while continuing with the following step. Slowly open
the air regulator (H) until the pump starts to cycle.
Allow the pump to cycle slowly until all air is pushed
out of the lines and the pump is primed.
If you are flushing, run the pump long enough to
thoroughly clean the pump and hoses. Close the air
regulator. Remove the suction tube from the solvent
and place it in the fluid to be pumped.
Pump Shutdown
WARNING
To reduce the risk of serious injury whenever you are
instructed to relieve pressure, always follow the Pres-
sure Relief Procedure at left.
At the end of the work shift, relieve the pressure.